Credo
5.9#26 in lintersFree planFree plan
VisitCredo vs Ruff
What both publish
| Fact | Credo | Ruff |
|---|---|---|
| Configuration | Credo uses a `.credo.exs` configuration file that can be placed in the project root or its `config/` folder. | Ruff supports configuration through pyproject.toml, ruff.toml, or .ruff.toml. |
| Installation | The docs recommend adding Credo as a Mix dependency with `only: [:dev, :test]` and `runtime: false`. | Ruff can be installed using uv, pip, pipx, standalone installers, and package managers including Homebrew and Conda. |
| Purpose | Credo is a static code analysis tool for Elixir focused on code consistency and teaching. | Ruff is a Python linter and code formatter written in Rust. |
Credo plans
- CredoFree
Ruff plans
- RuffFree
Pick Credo if…
You want what its maker publishes above — check its page for the details.
Pick Ruff if…
Ruff suits Python developers who want linting, formatting, and automatic fixes in one tool. It may also suit teams using supported editors, CI integrations, or pre-commit hooks.